Coltene
coltene.com
- Industry
- Medtech
- Headquarters
- Altstätten, St. Gallen
- Type
- listed
- Employees (approx.)
- 1,300
- Checked on
- 19 October 2026
51/100Grade C
Protection against forged senders: not protected (monitoring only)
Points per criterion
- MX 10 / 10
- SPF 15 / 15
- DKIM 20 / 20
- DMARC 6 / 25
- DNSSEC 0 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 59.8 ▼ 8.8
- Canton avg.: 52.3 ▼ 1.3
- Overall avg.: 53.5 ▼ 2.5
- Rank 18 of 26 in the industry
Findings
-
✕DMARC in monitoring mode only (p=none)
p=none provides reports but does not reject a single forgery. The goal is p=reject.
-
!SPF close to the 10-lookup limit (10)
One more sending service can break the limit. Flattening or subdomains for third parties create headroom.
-
!DKIM key below 2048 bits
RSA-1024 is considered too weak (RFC 8301, M3AAWG). Rotate to 2048-bit keys.
-
!DNSSEC not enabled
Without DNSSEC, DNS answers can be forged in transit. DANE requires DNSSEC.
-
!No MTA-STS
Without MTA-STS (or DANE) inbound encryption is not enforced; an attacker on the path can downgrade to plain text.
-
!No TLS reporting (TLS-RPT)
Without TLS-RPT the organisation does not learn when senders fail to deliver encrypted.
Who runs the mail?
- Mailbox provider
- Microsoft 365
- Provider jurisdiction
- USA · MX: US
- Detection confidence
- 100 / 100
- Microsoft tenant
- Managed · COLTENE
- Tenant region
- EU
Signals (10)
| MX | Microsoft 365 | coltene-com.mail.protection.outlook.com |
|---|---|---|
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
| DKIM | Microsoft 365 | selector1 → selector1-coltene-com._domainkey.coltene.onmicrosoft.com |
| Autodiscover | Microsoft 365 | autodiscover.outlook.com |
| Domain verification | Microsoft 365 | MS=ms20352775 |
| Network | Microsoft 365 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation |
| Domain verification | Google Workspace | google-site-verification=R9Wr6UxA12HozjO |
| SPF | Amazon | include:amazonses.com |
| Domain verification | Amazon | amazonses:oWuJvvZbEh2+HmazBNkwTZMsy114w2 |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 0 | coltene-com.mail.protection.outlook.com | 52.101.209.28 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | – |
52.101.91.153 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | |||
52.101.103.140 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US |
SPF
v=spf1 ip4:5.148.188.9 ip4:62.152.181.133 ip4:212.243.104.195 ip4:212.243.104.200 ip4:213.144.150.46 ip4:12.68.0.194 ip4:136.243.34.109 ip4:136.243.36.110 ip4:136.243.36.113 ip4:193.222.224.32 ip4:193.222.224.33 ip4:65.108.234.250 ip4:52.49.201.246 ip4:52.49.235.189 ip4:23.21.109.197 ip4:23.21.109.212 ip4:69.17.128.238 ip4:87.130.74.26 ip4:77.245.128.201 include:spf.protection.outlook.com include:145681928.spf01.hubspotemail.net include:zcsend.net include:mailing.eqs.com include:spf.zoho.eu include:amazonses.com include:eu.transmail.net include:servers.mcsv.net mx -all- all
-all- DNS lookups
- 10 / 10
- Includes
spf.protection.outlook.com145681928.spf01.hubspotemail.netzcsend.netmailing.eqs.comspf.zoho.euamazonses.comeu.transmail.netservers.mcsv.net- Detected sending services
- Microsoft 365, HubSpot, Mailjet, Zoho, Amazon SES, Mailchimp/Mandrill
- IPv4
- 19 addresses authorised directly
DMARC
v=DMARC1;p=none;rua=mailto:dmarc@coltene.com;ruf=mailto:dmarc@coltene.com- Policy
- p=none
- Subdomains (sp)
- inherits p=none
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
dmarc@coltene.com- Forensic reports (ruf)
dmarc@coltene.com
DKIM
| Selector | Key | delegated to |
|---|---|---|
k2 | RSA 2048 | dkim2.mcsv.net |
k3 | RSA 2048 | dkim3.mcsv.net |
mailjet | revoked | – |
s1 | RSA 2048 | s1.domainkey.u36216189.wl190.sendgrid.net |
s2 | RSA 2048 | s2.domainkey.u36216189.wl190.sendgrid.net |
selector1 | RSA 1024 | selector1-coltene-com._domainkey.coltene.onmicrosoft.com |
selector2 | RSA 1024 | selector2-coltene-com._domainkey.coltene.onmicrosoft.com |
Checked: 100 common selectors. Keys under custom selectors remain invisible.
Transport encryption
- MTA-STS
- missing
- DANE
- missing
- DNSSEC
- missing
- TLS-RPT
- missing
- BIMI
- missing
Verified services
From verification records in the domain TXT: services where the domain is verified.
Microsoft 365GoogleAppleMeta/FacebookAmazon SESMiro
History
- Score 51 · DMARC none
Raw data
coltene.com. IN MX 0 coltene-com.mail.protection.outlook.com.
coltene.com. IN TXT "v=spf1 ip4:5.148.188.9 ip4:62.152.181.133 ip4:212.243.104.195 ip4:212.243.104.200 ip4:213.144.150.46 ip4:12.68.0.194 ip4:136.243.34.109 ip4:136.243.36.110 ip4:136.243.36.113 ip4:193.222.224.32 ip4:193.222.224.33 ip4:65.108.234.250 ip4:52.49.201.246 ip4:52.49.235.189 ip4:23.21.109.197 ip4:23.21.109.212 ip4:69.17.128.238 ip4:87.130.74.26 ip4:77.245.128.201 include:spf.protection.outlook.com include:145681928.spf01.hubspotemail.net include:zcsend.net include:mailing.eqs.com include:spf.zoho.eu include:amazonses.com include:eu.transmail.net include:servers.mcsv.net mx -all"
_dmarc.coltene.com. IN TXT "v=DMARC1;p=none;rua=mailto:dmarc@coltene.com;ruf=mailto:dmarc@coltene.com"